Patents by Inventor John M. Halpin

John M. Halpin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Laser peening of components of thin cross-section
    Patent number: 6805970
    Abstract: The properties of a metal piece are altered by laser peening the piece on the first side using an acoustic coupling material operatively connected to the second side and subsequently laser peening the piece on the second side using an acoustic coupling material operatively connected to the first side.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: October 19, 2004
    Assignee: The Regents of the University of California
    Inventors: Lloyd A. Hackel, John M. Halpin, Fritz B. Harris, Jr.
  • Laser peening of components of thin cross-section
    Publication number: 20040086738
    Abstract: The properties of a metal piece are altered by laser peening the piece on the first side using an acoustic coupling material operatively connected to the second side and subsequently laser peening the piece on the second side using an acoustic coupling material operatively connected to the first side
    Type: Application
    Filed: September 29, 2003
    Publication date: May 6, 2004
    Applicant: The Regents of the University of California.
    Inventors: Lloyd A. Hackel, John M. Halpin, Fritz B. Harris
  • Pre-loading of components during laser peenforming
    Patent number: 6670578
    Abstract: A method and apparatus are provided for forming shapes and contours in metal sections by prestressing a workpiece and generating laser induced compressive stress on the surface of the metal workpiece. The step of prestressing the workpiece is carried out with a jig. The laser process can generate deep compressive stresses to shape even thick components without inducing unwanted tensile stress at the metal surface. The precision of the laser-induced stress enables exact prediction and subsequent contouring of parts.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: December 30, 2003
    Assignee: The Regents of the University of California
    Inventors: Lloyd A. Hackel, John M. Halpin, Fritz B. Harris
  • Laser peening of components of thin cross-section
    Patent number: 6657160
    Abstract: The properties of a metal piece are altered by laser peening the piece on the first side using an acoustic coupling material operatively connected to the second side and subsequently laser peening the piece on the second side using an acoustic coupling material operatively connected to the first side
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: December 2, 2003
    Assignee: The Regents of the University of California
    Inventors: Lloyd A. Hackel, John M. Halpin, Fritz B. Harris, Jr.
  • Laser peening of components of thin cross-section
    Publication number: 20020096503
    Abstract: The properties of a metal piece are altered by laser peening the piece on the first side using an acoustic coupling material operatively connected to the second side and subsequently laser peening the piece on the second side using an acoustic coupling material operatively connected to the first side
    Type: Application
    Filed: January 25, 2001
    Publication date: July 25, 2002
    Applicant: The Regents of the University of California
    Inventors: Lloyd A. Hackel, John M. Halpin, Fritz B. Harris
  • Pre-loading of components during laser peenforming
    Publication number: 20020096504
    Abstract: A method and apparatus are provided for forming shapes and contours in metal sections by prestressing a workpiece and generating laser induced compressive stress on the surface of the metal workpiece. The step of prestressing the workpiece is carried out with a jig. The laser process can generate deep compressive stresses to shape even thick components without inducing unwanted tensile stress at the metal surface. The precision of the laser-induced stress enables exact prediction and subsequent contouring of parts.
    Type: Application
    Filed: March 11, 2002
    Publication date: July 25, 2002
    Applicant: The Regents of the University of California
    Inventors: Lloyd A. Hackel, John M. Halpin, Fritz B. Harris
  • Large core fiber optic cleaver
    Patent number: 5501385
    Abstract: The present invention relates to a device and method for cleaving optical fibers which yields cleaved optical fiber ends possessing high damage threshold surfaces. The device can be used to cleave optical fibers with core diameters greater than 400 .mu.m.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: March 26, 1996
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: John M. Halpin
  • Solutions for cleaning plastic and metallic surfaces
    Patent number: 5145523
    Abstract: Liquid solutions for cleaning plastic and metallic surfaces and methods of cleaning such surfaces using the solutions are disclosed. The solutions may be used to clean audio/video tapes and tape-engaging parts, computer diskettes, electrical components, video screens, etc. The solutions comprise an isoparaffinic hydrocarbon solvent, a glycol ether, and, optionally, a monohydric branched alcohol having 4 to 10 carbon atoms.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: September 8, 1992
    Assignee: Van Waters and Rogers, Inc.
    Inventors: John M. Halpin, David J. Quam